Amsterdam & Jewels of the Rhine & Zurich-Lucerne

River cruise line Emerald is bringing out not one but two glamorous new superyachts to the world's oceans. Emerald Azzura, launching in March 2022 with cruises to destinations including Saudi Arabia, will be joined a year later by Emerald Sakara, making her maiden voyage to the Seychelles. Afterwards, Sakara - a Sanskrit mantra meaning "thoughts become things " - will join Azzurra in sailing the Mediterranean, Adriatic, Red and Black seas. The two 100-guest sister ships have balconies on 88per cent of cabins, as well as an infinity pool, spa, gym and marina platform with paddleboards and snorkelling gear.